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Portfoliotools.

Developer

Text Diff

A line-by-line diff of two texts, highlighting additions, removals and changes. For when you need to know what changed and a full version control setup is overkill.

Runs entirely in your browser

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How it works

  1. 01Paste the original into the left pane and the changed version into the right.
  2. 02Added and removed lines are highlighted, with a count of each.

Questions

Are my files uploaded anywhere?
No. The file is read from your disk by the browser and processed in this tab using JavaScript and WebAssembly. Nothing is transmitted, which you can verify by opening your browser's network panel or by disconnecting from the internet — the tool keeps working.
Is there a catch — a limit, a watermark, a sign-up?
None. Because the work happens on your machine rather than a server, there is no per-file cost to recover and therefore nothing to meter. No account, no queue, no watermark.
Can it diff whole files?
Paste their contents in. For anything you are versioning properly, git diff is the better tool — this exists for the cases where setting that up is overkill.